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A Police Car Siren Emits a Sound at 600 Hz

question 125

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A police car siren emits a sound at 600 Hz. If observer A moves toward the source at 50 km/hr, and the police car is traveling toward observer A at 100 km/hr all speeds relative to the road) , calculate the siren frequency heard by observer A assume the speed of sound in air = 343 m/s) .


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